Corn-razor.



C. L. MARTIN.

SASH WEIGHT. APPLICATION FILED FEB-28. 1911.

Patented Sept. 4, 191?.

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an stains Parana oni ibn- RICHARD MARX, OE PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO DEFIANCE MANUFACTURING COMPANY. OF PHILADELPHIA, PENNSYLVANIA, A. CORPORA- TION PENNSYLVANIA.

CORN-RAZOR.

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Specification of Letters Patent.

Patented Sept. 4:, 19117.

Application filed December 5, 1914. Serial No. 875,607.

To all whom 2'25 may concern:

Be it known that I, RICHARD MARX, a-

citizen of the United States, residing in certain Improvements in Corn-Razors, of which, the following is a specification.

One object of my invention is to provide a razor particularly adapted for cutting or trimming hardened skin growths such as corns or calli, which shall have its parts so arranged as to permit full view of the part being operated on, while embodying thead-' vantageous features of a safety razor, as

, regards the impossibility of making objectionably deep cuts.

It is further desired to provide a simple, substantial and inexpensive form of safety corn razor of such design that it is convenient to use, that it cuts with an inclined or drawing stroke, and has its parts so arranged and proportioned as to clear itself of the material cut.

These objects and other advantageous ends I secure as hereinafter set forth, reference being had to the accompanying drawings in which,

Figure 1 is a plan ofa, corn razor constructed according to .my invention;

Fig. 2 is a side elevation;

Fig. 3 is an inverted plan of the holder or main portion of the device;

Fig. at is a plan of the blade;

Figs. 5 and 6 are respectively an inverted plan and a perspective view of the cover plate;

Fig. 7 is an enlarged section on the line aa, Fig.1, and

Fig. 8 is a transverse-section, likewise on an enlarged scale, on the line bb, Fig. 1.

In the above drawings, 1 represents the body or frame of the razor which is preferably fonned of a single stamping of sheet metal, including a handle portion 2, and a body portion 3 whose outer or free end is downwardly flanged to provide a shoulder 4. It is to be noted that this shoulder extends in a straight line at an acute angle to the general line of said body portion; which,

having itsedge adjacent the opening 6 undercut or beveled from the top surface downwardly. The handle portion 2 extends upwardly from thegeneral plane of the body portion 3 at an angle of about 30 degrees, and said body portion is preferably so formed as to be concave underneath and convex on its top surface.

The razor blade 9 is rhomboidal in outline and at the rear ends of its two sides has two projecting lugs 11 so formed as to register with the ears 5 of the body 3 when the blade is laid in position thereon, it being noted that said body, rearwardly from the cross bar 8 has the general outline of the blade. The latter, when mounted in position upon the body of the holder, contactswith thesame along a line immediately adjacent the flange and at two points 12 adjacent the ends of the cross-bar 8, whose main portion, however, is elevated above the plane of the cutting edge 10 as shown in Fig. 8. This blade is held in place by a cover plate 13, which like the blade, is rhomboidal in outline and has its forward edge beveled or thinned. Its ends are provided with a pair of integral clips 14 which, when it is mounted upon the blade, extend upwardly around the edges of the same, with their turned-over ends in engagement with the top convex surface of the body 3 asshown in Fig. 7.

When so mounted the forward beveledbar 8; The design of the clips 14 is such that when the cover plate is forced back as far as possible, their rear edges strike the lugs. 11 of the blade forcing its rear edge tightly against the flange-4,-while their overhung portions frictionally engage the convex upper surface of the body 3 so as to effectually hold the cover plate and blade from dislodgment.

.Under conditions of use, when the parts are assembled'as shown in Figs. 1 and 7, it is obvious that anything operated on, such as a corn, is visible through the opening 7 in the body of the frame or handle structure so that the person using the instrument may see precisely what is being engaged by the cutting edge.

against upward movement.

The sheave case 4 may be provided with a flange 10 which in Fig. 2 is embedded in the block 1 so that its outer face is flush with the upper end of said block.

The lower end of the block 1 may be provided with a notch or groove 11 extending transversely to the U-shaped portion 8 of the reinforcement rod, the top of the groove being above the level of the lower portion of the U-shaped member so that a portion 12 of the U-shaped member will extend through the groove 11 transversely thereof in order that a book, not shown, of a supplemental weight block, not shown, may be hooked over the portion 12 to increase the weight for balancing the sash or sashes with which the block 1 is to be connected.

In practice the weight block 1 will be in serted in the chamber adapted to contain it and one end of the sash cord, not shown,

previously fastened to one sash will be forced throu h the race between the sheave 3 and case a and said end will be fastened to the other window sash inthe usual man ner so that the block 1 will be suspended and will act as a counterbalance to the window sash, or window sashes in case two sashes are connected to the one weight as is often the case.

From the foregoing it is clear that the sash cord may be readily threaded around the sheave 3 and that practically the entire space above the block 1 is free from anything that would interfere with the block being drawn close to the pulley in the window frame as is readily understood, this being due to the fact that the sheave 3 is mounted in the recess 2. An important feature of this invention is the curvedguidc or track a for facilitating the threading of the sash cord to "he weight, and it is obvious that either iron or cementitious material could be employed for the construction of the block 1. It is of course preferable, be-

cause of less cost, to employ the cementitious material, butin the case of extraordinarily large windows it may be advisable at times to employ iron or other metal in the manufacture of the block 1.

In the manufacture of the improved sash weight, shown in Figs. 2 and 3, the sheave 3 and the parts for mounting said sheave will be placed in a suitable mold, not shown, and the material of which the block is'to be formed will then be poured or placed in the mold so that the sheave will be cast in place as is readily understood.

From the foregoing it is clear that I have provided a recess with a semicircular track and that a sheave is journaled in the recess and spaced from the semicircular track so that when the end of a sash cord is pushed into the recess along the curved track it will readily pass along the periphery of the sheave, first downward then beneath and finally upward so that said end may be readily grasped by the workman as said end issues from the recess. It is readily seen that the sheave 3 and its case 4 can be inserted in the recess 2 through the mouth of said recess because said mouth is unobstructed.

1 claim: V

1. A sash weight comprising a concrete block having a recess in one end, a reinforcement rod embedded in said block, and

a sheave in the recess anchored to said re-' inforcement rod.

2. A sash weight comprising a concrete block having a recess in one end, a sheave case in said recess, a sheave rotatively mounted in said sheave case, said sheave case being curved to conform peripherally with the sheave, and a reinforcement rod embedded in the block and connected with said sheave case.

3. A sash weight comprising a sheave casehaving a hollowshaft, a sheave journaled on said shaft, and a block embracing the sides of said sheave case and forming a core inside of said hollow shaft to anchor the CHARLES L. -MARTIN.

Witnesses:

GEORGE H. HILES, A. F. SCHMIDTBAUER.

California, this 

